Improvement in engines



T. C. ROBINSON & C. W. CL'lvFT..

Engines'.

fN0. 136,764, i Pa'tentedMarchLlS'l'S.

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.UNITED STATES 4PATENT OFFICE..

THOMAS C. ROBINSON AND CHARLES W. CLIFT, OF MYSTIC BRIDGE, CONN.

IMPROVEMENT IN ENGINES.

Specification forming part of Letters Patent No. 136,764, dated March 11, 1873.

To all whom it may concern;

Be it known that we, THOS. C. ROBINSON and CHARLES W. CLIFT, of Mystic Bridge, Connecticut, have invented certain Improvements in Engines, of which the following is a specification: v

Our invention has relation to water-meters and steam-engines; and it consists in the construction and novel arrangement of the main cylinder, having induction and eduction ports, double piston heads provided with valves adapted to work and operate in connection with a valve and upright piston; also, in the construction of the connecting-rods having a knuckle joint,I substantially as hereinafter more fully described.

Figure l is a sectional side view of a watermeter, showingv the manner of working the valve. Fig. 2 is a sectional end view of the machine, showing that end of the machine which is at the right hand in Fig. l, and showing the mannerin which the pressure of the water throws the valve. Y

A is the main cylinder. B B are two piston-heads, connected together by two or more rods, b b b b, Fig. 2. D is a piston in the small cylinder C, connected with the valve E by the connecting-rod F with knuckle-joint. e e are small valves in the piston-heads B B for the discharge of the water which may leak from the cylinder C into the chamber H. E is the valve, with rotating motion, which is divided into two parts by a partition in the center, one part admitting water into the cylinder A from the main pipe by the induction-ports j f, Fig. 2, and the other part discharging water from the cylinder A by the eduction-ports g g, Fi g. 2. h is an open passage or port from the main supply-pipe, connecting with the cylinder C. Gr is a rod attached to the piston D, and connects with an indicator which shows the quantity of water passing through the meter.

The manner in which the meter works is as follows: The water from the main pipe enters the valve E-and iiows through the inductionport f into the main cylinder A, thereby foreing the piston B toward the opposite end 'of the cylinder. On its way it strikes against the knuckle-joint of the rod F, and moves it until it passes the center of gravity, when the pressure of water in the cylinder C from the main pipe through the open passage h upon the piston D continues the movement of the `knucklejoint until the induction-port f and eduction-port g are closed. At the same time and by the same motion the opposite induction and eduction ports fand g are opened, admitting the water into the other end of the cylinder, when the motion of the piston is reversed and driven back again through the cylinder, and the action of the valve reversed, and this action is continued by the pressure of the water, thus causing a continuous movement. f

The operation of the, machine will be the same whether the motive power be steam or water.

1. The combination of the valve E, connecting-rod F, with the knuckle-joint i and piston D, substantially as shown and described.

2. The double piston-heads B B, main cylinder A, having the induction and eduction ports j' g, with the valves e e, constructed to .operate with valve E and piston D,substan tially as and for the purposes set forth.

THOMAS C. ROBINSON. CHARLES W. CLIFT. 

